HIDAYANTI, Ulfa; SIREGAR, Lasnuri; LUBIS, Nadya; SOFIYAH , Khotna. Masalah Matematika di Sekolah Dasar. Jurnal Pendidikan dan Dakwah, Padangsidimpuan, INA, v. 1, n. 2, p. 168–182, 2024. Disponível em: https://internationaljournal-isssh.com/index.php/jpd/article/view/26.. Acesso em: 3 aug. 2025.